body{
    background-color: #f6f6f6;
    /* height: 3000px; */
}
.top_nav{
    background-color: #fff;
}
.banner-wrapper{
    height: 240px;
    background-image: url(https://brands.cnblogs.com//home-zone/images/brand_zone_background.png);
    display: flex;
    align-items: center;
}
.banner-wrapper>div{
    width: 1200px;
    margin: 0 auto;
}
.banner-wrapper>div>p{
    color: #fff;
}
.banner-wrapper>div>p:nth-child(1)>a{
    color: #fff;
    font-weight: 400;
    line-height: 1.5;
    font-size: 38px;
    margin-bottom: 25px;
}
.content{
    margin-top: 15px;
}
.content>div{
    width: 1200px;
    background-color: #f6f6f6;
    margin: 0 auto;
}
.content>div::after{
    content: '';
    display: block;
    clear: both;
}
.content>div>div{
    content: '';
    display: block;
    clear: both;
}
.content>div>div>div{
    float: left;
}
.content>div>div>div:last-child{
    margin-left: 30px;
}
.content>div>div>div::after{
    content: '';
    display: block;
    clear: both;
}
.content_left{
    width: 870px;;
    background-color: #fff;
}
.content_right{
    width: 300px;
    background-color: #fff;
}
.content_left_tit>div{
    box-sizing: border-box;
    padding: 28px;
    border-bottom: 1px dashed #f6f6f6;
}
.content_left_tit>div::after{
    content: '';
    display: block;
    clear: both;
}
.content_lift_tit_introduce{
    width: 580px;
}
.content_left_tit>div>div, .content_left_tit>div>img{
    float: left;
}
.content_left_tit_img{
    width: 200px;
}
.content_left_tit_head{
    font-size: 18px;
}
.content_lift_tit_introduce{
    font-size: 15px;
    color: #959595;
    line-height: 20px;
    font-weight: lighter;
}
#content_lift_tit_sub{
    float: right;
    margin-top: 20px;
}
#content_lift_tit_sub span{
    font-size: 13px;
    color: #959595;
    line-height: 20px;
    font-weight: lighter
}
.content_left_ad{
    padding:0 12px;
    display: flex;
    background-color: #f6f6f6;
}
.content_left_ad>div{
    margin: 10px;
    background-color: red;
    flex: 1;
    height: 169px;
}
.content_right{
   background-color: #f6f6f6;
}
.content_right>div{
    margin-bottom: 15px;
}
.content_right>div{
    padding: 20px;
    box-sizing: border-box;
    background-color: #fff;
}
.content_right>div>div:nth-child(1){
    border-bottom: 1px solid #f6f6f6;
}
.content_right>div>div:nth-child(1) div{
    line-height: 60px;
    display: inline-block;
    vertical-align: text-bottom;
    border-bottom: 2px solid;
    border-image: linear-gradient(270deg,#ff400e,#ffb300,#92daff) 1;
}
.content_right>div:nth-child(1) img{
    width: 200px;
    height: 100px;
    display: block;
    margin: 0 auto;
}

.content_right>div:nth-child(5){
    height: 161px;
    background-color: springgreen;
}
.guanggao{
    height: 161px;
}
.guanggao2{
    height: 200px;
}
.content_right>div:nth-child(6){
    height: 200px;
    background-color: violet;
}
.forum{
    margin-top: 20px;
}
.forum>div, .forum>div>img{
    float: left;
}
.forum::after{
    content: '';
    display: block;
    clear: both;
}
.forum>div>img{
    border-radius: 50%;
    background-color: antiquewhite;
    height: 86px;
}
.forum_right{
    margin-left: 20px;
}
.forum_att{
    margin-top: 30px;
    border-radius: 10px;
    text-align: center;
}
.forum_att>div{
    width: 45px;
    margin: 0 auto;
    padding: 5px 10px;
    border: 1px solid black;
    border-radius: 5px;
    cursor: pointer;
}
.hot_article ul{
    margin-top: 10px;
}
.hot_article ul>li{
    padding-left: 14px;
    border-left: 2px solid #bf3838;
    margin-bottom: 18px;
}
.hot_article ul>li>a{
    font-size: 14px;
}
.email{
    padding: 20px 20px;
    box-sizing: border-box;
    text-align: center;
}
.footer div:nth-child(1){
    width: 80%;
    height: 3px;
    background-color: #ededed;
    margin: 0 auto;
}
.footer div, 
.footer div a{
    text-align: center;
    font-size: 14px;
    color: #a3a3a3;
    line-height: 30px;
}
#top{
    /* margin-left: auto; */
    width: 50px;
    padding: 20px;
    top: 700px;
    left: 100%; 
    background-color: #e8e8e8;
    position: sticky;
    position: -webkit-sticky;
}